OTA: 1. Install NANLINK app. 2. Enable Bluetooth. 3. Connect to fixture in app. 4. Navigate to Device - Firmware Update. 5. Follow in-app prompts.USB: 1. Download firmware zip. 2. Copy .bin to root of FAT/FAT32 USB drive. 3. Power off fixture. 4. Insert USB. 5. Power on to start update.